Significance of chin-brow vertical angle in correction of kyphotic deformity of ankylosing spondylitis patients
Significance of chin-brow vertical angle in correction of kyphotic deformity of ankylosing spondylitis patients
复制标题
DOI：
10.1097/01.brs.0000083239.06023.78
复制
发表时间：
2003-09-01
期刊：
影响因子：
3
通讯作者：
Kim, JM
中科院分区：
文献类型：
--
作者：
Suk, KS;Kim, KT;Kim, JM
研究设计.一项前瞻性研究。目的。探讨颏眉垂直角在强直性脊柱炎患者颈椎后凸畸形伴强直的矫正计划和评估中的意义。在计划治疗和评估其结果时，需要准确评估和测量脊柱后凸畸形。对34例强直性脊柱炎合并颈椎强直患者行椎弓根减影延长截骨术矫正后凸畸形进行了研究。通过测量胸椎后凸、腰椎前凸、T1前上点垂直线与S1前上点垂直线之间的距离以及骶骨倾斜度，进行矢状面平衡的影像学评估。在患者的临床照片上测量颏眉垂直角。临床结果通过量表进行评估。术前和术后颏眉垂直角分别为35.5 °和1.8 °。最终随访X线片显示腰椎前凸从5.5 °增加到43.2 °（增加了37.7 °），胸椎后凸从50.4 °保持稳定到50.2 °。颏额垂直角的减小与矫正角呈负相关。颏眉垂直角小于-10 °的患者水平注视得分显著低于正常人。颏眉垂直角是评价水平注视的客观指标。根据本研究的结果，建议测量颏眉垂直角，以计划矫正脊柱后凸畸形和准确评估治疗效果。
Study Design. A prospective study.Objectives. To assess the significance of chin-brow vertical angle in planning and evaluating the correction of kyphotic deformity with ankylosis of the cervical spine in ankylosing spondylitis patients.Summary of Background Data. Accurate assessment and measurement of spinal kyphotic deformity is required when planning treatment and assessing its results.Methods. Thirty-four ankylosing spondylitis patients with cervical ankylosis who had undergone pedicle subtraction extension osteotomy for correction of kyphotic deformity were studied. Radiographic assessment for sagittal balance was performed by measuring thoracic kyphosis, lumbar lordosis, the distance between the vertical line on the anterosuperior point of T1 and that of S1, and sacral inclination. Chin-brow vertical angle was measured on the clinical photos of the patients. Clinical outcomes were assessed by a questionnaire.Results. The preoperative and postoperative chin-brow vertical angles were 35.5degrees and 1.8degrees, respectively. Final follow-up radiographs showed an increase in lumbar lordosis from 5.5degrees to 43.2degrees (an increase of 37.7degrees), and thoracic kyphosis remained stable from 50.4degrees to 50.2degrees. Sagittal imbalance significantly improved from 101.5 mm to 12.7 mm. The decreased chin-brow vertical angle correlated negatively with the correction angle. The patients with a chin-brow vertical angle of less than -10degrees had significantly low scores on horizontal gaze.Conclusions. Chin-brow vertical angle was an objective index for evaluating horizontal gaze. Based on the results of this study, measurement of chin-brow vertical angle is recommended for planning correction of kyphosis and accurate evaluation of treatment outcome.